refactor: migrate billing and test files to dependency injection pattern #5383

Job	Run time
build-and-check	2m 40s
test-sdk	49s
test-packages/internal	49s
test-common	48s
test-web	43s
test-packages/agent-runtime	59s
test-integration-common	46s
test-.agents	46s
test-packages/billing	42s
test-integration-packages/agent-runtime	41s
test-cli	1m 10s
test-integration-.agents	40s
test-integration-packages/internal	40s
test-integration-packages/billing	45s
test-integration-web	41s
test-integration-sdk	42s
test-integration-cli	45s
	15m 6s

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